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Distance from Dexter, MO to IAD Airport

Distance

839 mi

Time

15 hours 47 mins

Gas Cost

$78 - $152

Helpful Inaccurate

There are 697.31 miles from Dexter to Washington Dulles International Airport (IAD) in northeast direction and 839 miles (1,350.24 kilometers) by car, following the I-64 route.

Dexter and IAD Airport are 15 hours 47 mins far apart, if you drive non-stop .

This is the fastest route from Dexter, MO to IAD Airport. The halfway point is Dandridge, TN.

Please note the time difference between Dexter, MO and IAD Airport is 1 hour. The current time in Dexter is 2:27 am and the current time in IAD Airport is 3:27 am.

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Lowest Price Rental Cars in Dexter, MO

Planning on renting a car to go from Dexter, MO to IAD Airport? Here there are some offers to rent a car in Dexter, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dexter »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 33.70 gallons of gas to cover the route between Dexter, MO and IAD Airport.

The estimated cost of gas to go from Dexter to IAD Airport is $109.91.

During the route, an average car will release 660.16 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Dexter, MO and IAD Airport

If you want to meet halfway between Dexter, MO and IAD Airport or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 36.056793 and -83.428558, or 36º 3' 24.4548" N, 83º 25' 42.8088" W. This location is 419.51 miles away from Dexter, MO and IAD Airport and it would take approximately 7 hours 53 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Dandridge, TN, situated 433 miles from Dexter, MO and 449 miles from IAD Airport. It would take 6 hours 49 mins to go from Dexter to Dandridge and 6 hours 55 mins to go from IAD to Dandridge.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dexter, MO and IAD Airport is Knoxville, TN, situated 402 miles from Dexter, MO and 478 miles from IAD Airport. It would take 6 hours 19 mins to go from Dexter to and 7 hours 21 mins to go from IAD to Knoxville.